As the grain size of a metal increases, its ductility ______

As the grain size of a meal increases, its ductility ______

Right Answer is:

Decreases

SOLUTION

As the grain size of a meal increases, its ductility decrease.

Lower the grain size, more is the number of grain boundaries, thus more is the yield strength, thus more is the ductility. So, as grain size increases, its ductility decreases.

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